GM Ecotec engine

The GM Ecotec engine, also known by its codename L850, is a family of all-aluminium inline-four engines, displacing between 2.0 and 2.5 litres. While these engines were based on the GM Family II engine, the architecture was substantially re-engineered for the new Ecotec application produced since 2000. This engine family replaced the GM Family II engine, the GM 122 engine, the Saab H engine, and the Quad 4 engine.

Generation I

The 'Ecotec' name was adopted in 2000 for the new generation of Family II engines. The name was already used for the Opel GM Family II engine, Family 1 and Family 0 ranges. GM intends this new Ecotec to become its global 4-cylinder, and it has already fully replaced their OHV I4 line.

The Ecotec engine is a DOHC4-valve design with an aluminum block and head (L850 for 86mm bore applications, and L880 for 88mm bore), designed for displacements from 1.8 to 2.4L. Development began in 1994, by an international team of engineers and technicians from Opel's International Technical Development Center in Rüsselsheim, Germany, GM Powertrain in Pontiac, Michigan, and Saab in Södertälje, Sweden. Much of the development work on this project was carried out by Lotus Engineering, Hethel, United Kingdom. The engine uses aluminum pistons and cast iron cylinder liners. Vibration is reduced with twin balance shafts.

GM Ecotec engine

The GM Ecotec engine, also known by its codename L850, is a family of all-aluminium inline-four engines, displacing between 2.0 and 2.5 litres. While these engines were based on the GM Family II engine, the architecture was substantially re-engineered for the new Ecotec application produced since 2000. This engine family replaced the GM Family II engine, the GM 122 engine, the Saab H engine, and the Quad 4 engine.

Generation I

The 'Ecotec' name was adopted in 2000 for the new generation of Family II engines. The name was already used for the Opel GM Family II engine, Family 1 and Family 0 ranges. GM intends this new Ecotec to become its global 4-cylinder, and it has already fully replaced their OHV I4 line.

The Ecotec engine is a DOHC4-valve design with an aluminum block and head (L850 for 86mm bore applications, and L880 for 88mm bore), designed for displacements from 1.8 to 2.4L. Development began in 1994, by an international team of engineers and technicians from Opel's International Technical Development Center in Rüsselsheim, Germany, GM Powertrain in Pontiac, Michigan, and Saab in Södertälje, Sweden. Much of the development work on this project was carried out by Lotus Engineering, Hethel, United Kingdom. The engine uses aluminum pistons and cast iron cylinder liners. Vibration is reduced with twin balance shafts.

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